Ear plug



FIG. 1 is a perspective view of an ear plug showing my new design;

FIG. 2 is a side elevational view thereof, with all other side elevational views being identical thereto;

FIG. 3 is an end elevational view thereof, the opposite end elevational view being identical thereto;

FIG. 4 is a side elevational view of a second embodiment of an earplug showing my design; and,

FIG. 5 is a side elevational view of a third embodiment of an earplug showing my design. 

The ornamental design for an ear plug, as shown and described. 